/* * (C) Copyright 2002 * Sysgo Real-Time Solutions, GmbH * Marius Groeger * * Copyright (C) 2001 Erik Mouw (J.A.K.Mouw@its.tudelft.nl) * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include #include #include #include #include #include #include #include #include #include #include static struct tag *params; #if defined (CONFIG_SETUP_MEMORY_TAGS) || \ defined (CONFIG_CMDLINE_TAG) || \ defined (CONFIG_INITRD_TAG) || \ defined (CONFIG_SERIAL_TAG) || \ defined (CONFIG_REVISION_TAG) || \ defined (CONFIG_LCD) || \ defined (CONFIG_VFD) static void __setup_start_tag(void); static void __setup_end_tag(void); #define setup_start_tag __setup_start_tag #define setup_end_tag __setup_end_tag #else #define setup_start_tag() do {} while(0) #define setup_end_tag() do {} while(0) #endif #ifdef CONFIG_CMDLINE_TAG static void __setup_commandline_tag(const char *commandline); #define setup_commandline_tag __setup_commandline_tag #else #define setup_commandline_tag(a) do {} while(0) #endif #ifdef CONFIG_SETUP_MEMORY_TAGS static void __setup_memory_tags(void); #define setup_memory_tags __setup_memory_tags #else #define setup_memory_tags() do {} while(0) #endif #if 0 #ifdef CONFIG_INITRD_TAG static void __setup_initrd_tag(ulong initrd_start, ulong initrd_end); #define setup_initrd_tag __setup_initrd_tag #else #define setup_initrd_tag(a,b) do {} while(0) #endif #endif extern ulong calc_fbsize(void); #if defined (CONFIG_VFD) || defined (CONFIG_LCD) static void __setup_videolfb_tag(gd_t *gd); #define setup_videolfb_tag __setup_videolfb_tag #else #define setup_videolfb_tag(a) do {} while(0) #endif #ifdef CONFIG_REVISION_TAG static void __setup_revision_tag(struct tag **in_params); #define setup_revision_tag __setup_revision_tag #else #define setup_revision_tag(a) do {} while(0) #endif #ifdef CONFIG_SERIAL_TAG void __setup_serial_tag(struct tag **tmp); #define setup_serial tag __setup_serial_tag #else #define setup_serial_tag(a) do {} while(0) #endif #ifdef CONFIG_SHOW_BOOT_PROGRESS # include # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg) #else # define SHOW_BOOT_PROGRESS(arg) #endif int do_bootm_linux(struct image_handle *os_handle, struct image_handle *initrd) { void (*theKernel)(int zero, int arch, uint params); image_header_t *os_header = &os_handle->header; const char *commandline = getenv ("bootargs"); if (os_header->ih_type == IH_TYPE_MULTI) { printf("Multifile images not handled at the moment\n"); return -1; } printf("commandline: %s\n", commandline); theKernel = (void (*)(int, int, uint))ntohl((unsigned long)(os_header->ih_ep)); /* FIXME: replace by pr_debug */ debug ("## Transferring control to Linux (at address %08lx) ...\n", (ulong) theKernel); setup_start_tag(); setup_serial_tag(¶ms); setup_revision_tag(¶ms); setup_memory_tags(); setup_commandline_tag(commandline); #if 0 if (initrd_start && initrd_end) setup_initrd_tag (initrd_start, initrd_end); #endif setup_videolfb_tag((gd_t *) gd); setup_end_tag(); if (relocate_image(os_handle, (void *)ntohl(os_header->ih_load))) return -1; /* we assume that the kernel is in place */ printf ("\nStarting kernel ...\n\n"); #ifdef CONFIG_USB_DEVICE { extern void udc_disconnect(void); udc_disconnect(); } #endif cleanup_before_linux(); theKernel (0, CONFIG_ARCH_NUMBER, CONFIG_BOOT_PARAMS); return -1; } void __setup_start_tag(void) { params = (struct tag *)CONFIG_BOOT_PARAMS; params->hdr.tag = ATAG_CORE; params->hdr.size = tag_size(tag_core); params->u.core.flags = 0; params->u.core.pagesize = 0; params->u.core.rootdev = 0; params = tag_next(params); } void __setup_memory_tags(void) { struct device_d *dev = NULL; list_for_each_entry(dev, &device_list, list) { if (dev->type == DEVICE_TYPE_DRAM) { params->hdr.tag = ATAG_MEM; params->hdr.size = tag_size(tag_mem32); params->u.mem.start = dev->map_base; params->u.mem.size = dev->size; params = tag_next(params); } } } void __setup_commandline_tag(const char *commandline) { const char *p; if (!commandline) return; /* eat leading white space */ for (p = commandline; *p == ' '; p++) ; /* * skip non-existent command lines so the kernel will still * use its default command line. */ if (*p == '\0') return; params->hdr.tag = ATAG_CMDLINE; params->hdr.size = (sizeof (struct tag_header) + strlen(p) + 1 + 4) >> 2; strcpy(params->u.cmdline.cmdline, p); params = tag_next(params); } void __setup_initrd_tag(ulong initrd_start, ulong initrd_end) { /* an ATAG_INITRD node tells the kernel where the compressed * ramdisk can be found. ATAG_RDIMG is a better name, actually. */ params->hdr.tag = ATAG_INITRD2; params->hdr.size = tag_size(tag_initrd); params->u.initrd.start = initrd_start; params->u.initrd.size = initrd_end - initrd_start; params = tag_next(params); } #if 0 /* FIXME: doesn't compile */ void __setup_videolfb_tag(gd_t *gd) { /* An ATAG_VIDEOLFB node tells the kernel where and how large * the framebuffer for video was allocated (among other things). * Note that a _physical_ address is passed ! * * We only use it to pass the address and size, the other entries * in the tag_videolfb are not of interest. */ params->hdr.tag = ATAG_VIDEOLFB; params->hdr.size = tag_size(tag_videolfb); params->u.videolfb.lfb_base = (u32)gd->fb_base; /* Fb size is calculated according to parameters for our panel */ params->u.videolfb.lfb_size = calc_fbsize(); params = tag_next(params); } #endif #if 0 /* FIXME: doesn't compile */ void __setup_serial_tag(struct tag **tmp) { struct tag *params = *tmp; struct tag_serialnr serialnr; void get_board_serial(struct tag_serialnr *serialnr); get_board_serial(&serialnr); params->hdr.tag = ATAG_SERIAL; params->hdr.size = tag_size(tag_serialnr); params->u.serialnr.low = serialnr.low; params->u.serialnr.high = serialnr.high; params = tag_next(params); *tmp = params; } #endif #if 0 /* FIXME: doesn't compile */ void __setup_revision_tag(struct tag **in_params) { u32 rev = 0; u32 get_board_rev(void); rev = get_board_rev(); params->hdr.tag = ATAG_REVISION; params->hdr.size = tag_size(tag_revision); params->u.revision.rev = rev; params = tag_next(params); } #endif void __setup_end_tag (void) { params->hdr.tag = ATAG_NONE; params->hdr.size = 0; }